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xfsdump questions

To: xfs@xxxxxxxxxxx
Subject: xfsdump questions
From: Stevie Trujillo <stevie.trujillo@xxxxxxxxx>
Date: Fri, 19 Dec 2014 09:57:38 +0100
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Is xfsdump an ancient relic or something recommended to new users (I
have never seen anyone recommending it)? I gave it a try and found the
incremental backups to be really fast!

How are incremental backups implemented? I saw that my inventory file
is really small. Does it use some internal xfs metadata to detect
changes? Is it resilient against all kinda renames and changing
timestamps etc that a user might do? (I've previously used a backup
system that broke when doing stuff like that)

Is it possible to backup (and restore) ctimes?

I read that the incremental backups are limited to a depth of 10. Are
they intended to be used in a binary tree like fashion?

Stevie Trujillo

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